Starting device for internal-combustion engines.



W. OBERG.

STARTING DEVICE FOR INTERNAL COMBUSTION ENGINES. APPLICATION FILED AUG. 7, 1909.

Patented Mar. 29, 1910.

Lid

direction 01 the arrow a in Fig. 5.

12 parallel with 50 WILLIAM owns, or

OAKLAND, NEBRASKA, ASSIGNOR OF ONE-HALF 'TO PETER PALMER, F OAKLAND, NEBRASKA.

STARTING DEVICE FOR INTERNAia-COMBUSTION ENGINES.

To all whom it may concern:

Be it known that I, WILLIAM OBERG, a citizen of the United States of America, and resident of Oakland, Burt county, Nebraska, have invented a new and useful Starting Device for Internal-Combustion Engines, of which the followin is a specification.

The object of this invention is to provide improved means'for F cranking or starting an explosive engine. A further object of this invention is to provide improved means for cranking or starting an explosive engine without risking life or limb of the operator in relation to such engine.

My invention consists in the construction, arrangement and combination of elements hereinafter set forth, pointed out in my claims and illustrated by the accompanying drawing, in which- Figure 1 is a plan of the com lete device without any jacket or casing. ig. 2 is a vertical section on the indicated line 22 of Fig. 1. Fig. 3 is a side elevation of a portion of the device shown in Fig. 1. Fig. 4 is an end elevation of the device; Fig. 5 is acrosssection on the indicated line 5- 5 of Fig. 1.

In the construction of the machine as shown the numeral designates a base and 11, 12 designate beams, standards or bearin heads arranged parallel with each other and rising from the base 10. A shaft 13 is mounted for. rotation in bearings 15 on the heads 11, 12 and a spring 16 may be fixed atone end to said shaft and at the other end tothe head 11 in such manner that the re silience of said spring when released from wound position will rotate the shaft 13 in the direction of the arrow a in Fig. 5. The sprin may be substituted by a drum 17 on the s aft 13 adapted to carry a weighted rope arran ed to rotate said shaft in thp J sprocket wheel 18 is fixed to the shaft .13 and is connected by a chain 19 to a sprocket wheel 20 loosely mounted ona counter shaft 21 journaled in bearings 22 on the heads 11,

the shaft 13.- A ratchet wheel 23 is mounted on the sprocket wheel Specification of Letters Patent Application filed August 7, 1909. Serial No. 511,824.

the arrow 1) in Fi 18 and normally is engaged by a spring- Patented Mar. 29, 1910.

pressed pawl 24 fixed to the base 10. It is the function of the pawl 24 and ratchet wheel 23'to retain the sprocket wheel 18 and shaft 13 against weight-operated drum 17 A ratchet wheel 25 is fixed to the counter shaft 21 adjacent the sprocket wheel 20 and is connected to said sprocket wheel by a spring-actuated pawl 26. It is the function of the pawl 26 and ratchet wheel 25 to rotate the counter shaft 21 when the sprocket wheel 20 is driven by the chain 19 in the direction of 3 and permit said counter shaft to revo ve in the same direction (under power of the started engine) without rotating said sprocket wheel.

A clutch member 27 is feathered to and adjustable longitudinally of one end portion of the counter shaft 21 and is adapted to engage attimes with a clutch member on an en ine shaft not shown. A hand lever 28 is ulcrumed on a bracket 29 fixed to the head 12 and is provided with a yoke at its forward end embracing the clutch member 27. d The lever 28 isprovided with a li or lug 30 adapted to be engaged at times by aratchet-toothed lower margin. of a rod 31 and a lever 32 fulcrumed on the lever 28 is shaped at its forward end for engagement beneath a dan e 33 on the upper margin of the rod 31. t is the function of the lever 32 to lift the rod 31 free from the lip 30 of the lever 28 at times and under manual aotuation. A pinion 34 is mounted rigidly on the counter shaft 21 adjacent the sprocket wheel 20 and meshes with a pinion 35 fixed to a shaft 36 journaled in bearings 37 on the heads 11, 12 and arranged parallel with the first shaft. A sprocket wheel 38 is fixed to the shaft 36 and is connected by a chain 39 to a sprocket wheel 40 loosely mounted on the shaft 13. The sprocket wheel 40 is provided with clutch lugs adapted to engage at times with clutch lugs 41 on the wheel 18 and revolve the latter wheel in the direction opposite to that indicated by the arrow a in Pig. 5. Normally the sprocket wheel 40 is unclutched or disconnected 'from the wheel 18. A lever 42 is fulcrum'ed on.a bracket 43 extending inward from the head 12 and is formed with a yoke'on one end engaging rotation by the spring 16 or a hub 44 on the wheel 40 and adapted to move said wheel longitudinally of the shaft 13. The op osite end ortion of the lever 42 is pivotal y connecte to the inner end of the rod 31. The lever 42 is oflset downwardly intermediate of its ends into a slid-.

ing plate 45 slidingly mounted on a bar 46 v other end to the base 10.

' 44 and sprocket wheel 40 relative to the sprocket wheel 18. A-screw 49 is mounted for rotation in bearings 50 on the heads 11, 12 and is arranged parallel with and between the shaft 13 and counter shaft 21.

The screw 49 extends throu h a nut 50 and said nut is. embraced'by stu s 51, 52 extending forwardly and upwardly from the sliding plate 45. A sprocket wheel 53 is feathered to the screw 49 adjacent the head 12 and is connected by a chain 54 to a sprocket wheel 55-rigidly mounted on the shaft 13.

A draft wire 56 is fixed at one end to the' spring-pressed pawl 24, extends through a guide on the bar 46 and is fixed at its opposite end to the forward end of the lever 28.. g In the practical use of this device to start an engine the lever 32 is manually actuated to lift the rod 31 from engagement with the lever '28; the lever 28 1s manipulated to shift the clutch 27 into engagement with the clutch member on the. engine shaft and at the same time apply a draft throu h the wire 56.to release the spring-presse pawl 24 from the ratchet wheel 23, thus releasing the spring 16 or wei the spring 16 or welght-operated 'drum 17 rotates the shaft 13 and wheel 18 in the direction of the arrow a in Fig. 5 and also drives the clutchmember 27, shaft, 21 and wheel 20 in the same direction through the chain 19;,the shaft 21, acting through the gears 34, 35, drives the shaft 36, wheel 38, chain 39, wheel 40 in the opposite direction idly because of detached relations existing at this time betweenthe wheels 40 and 18,; the clutch member 27 drives the engine shaft forwardly to and beyond an explosion therein, after which the e losive properties 7 of the engine propel it an its power reacts through the 36', sprocket wheel 38, chain 39 and sprocket wheel 40.

Advance movementtof the shaft 13 under impulse ofthe spring or weighted drum. ro-

ght-operated drum 17 utch member- 27 to furtherrotation of the shaft 21, gears 34, 35, shaft' the driving shaft to the tates the sprocket wheel 55, chain 54, wheel 5-3 and screw 52 to the end of moving the nut 50 in such manner that said nut,acting through the slidingplate 45, will os'cillate the'lever 42 and move the sprocket wheel 40.

52 in the reverse direction. I The result of this latter movement is threefold? namely, i

to wind the spring or weighted drum; second, to reverse the travel of the nut 50 throu h the screw 49, reverse the travel of the sliding plate 45, oscillate the lever 42 in the opposite direction and disengage, the' wheel 40'from the wheel 18; and third, to cause the lever 42 to act through the .rod 31 on the lip ,30' and move the lever 28 to its initial position and in so doing disengage the clutch member 27 from the engine shaft.

Therenpon the starting device comes to rest until again manipulated.

I claim as my 1nvention 1. A starting device for explosive engines, comprising a power shaft, adriving shaft ratchet-geared to the. power shaft, Y

clutch connections between the" driving shaft and an "engineshaft, back gearing fromthe driving shaft to the ower shaft, clutch connectionsbetween the ack gearing and power shaft, and a screw timing device controlling the latter clutch 'connections and also controlling the clutch. connections withthe engine shaft.

.2. A starting device. for explosive engines, comprising a power shaft, detentv devices acting on said power shaft, a driving shaft ratchet-geared to 'the power shaft, clutch connections between-the driving shaft and an engine shaft, manually operated lever mechanism for actuating said clutch connections in one direction, back gearing from the driving shaft to the power shaft, clutch connections between the back gearing and power shaft, a screw timing device controling the latterclutch connections, and draft devices between the lever mechanism and detent. devices, the timing devices also controlling said draft devices.

3. A starting device for explosive engines, comprising a power shaft, detent devices acting on said-power shaft, a driving shaft ratchet-geared to the power shaft, clutch connections between the driving shaft and an engine shaft, manually o erated lever mechanism adapted to move said clutch connections in one direction, back gearing from power shaft, clutch connections, bet weenithe back gearing and Signed by me at Oakland, Nebraska, this power shaft, a screw timing device controlsecond day of August, 1909.

ling the latter clutch connections, a rod car-- ried by said "timing device, ratchet connec- WILLIA M OBLRU' tions between said rod and-the lever mech- Witnesses: anism, and a lever adapted to disengage said i C. O. NEUMANN,

ratchet connections at times. G. A. :KULT) 

